]>
Commit | Line | Data |
---|---|---|
1 | #include "builtin.h" | |
2 | #include "config.h" | |
3 | #include "commit.h" | |
4 | #include "refs.h" | |
5 | #include "object-store.h" | |
6 | #include "pkt-line.h" | |
7 | #include "sideband.h" | |
8 | #include "run-command.h" | |
9 | #include "remote.h" | |
10 | #include "connect.h" | |
11 | #include "send-pack.h" | |
12 | #include "quote.h" | |
13 | #include "transport.h" | |
14 | #include "version.h" | |
15 | #include "oid-array.h" | |
16 | #include "gpg-interface.h" | |
17 | #include "cache.h" | |
18 | #include "shallow.h" | |
19 | ||
20 | int option_parse_push_signed(const struct option *opt, | |
21 | const char *arg, int unset) | |
22 | { | |
23 | if (unset) { | |
24 | *(int *)(opt->value) = SEND_PACK_PUSH_CERT_NEVER; | |
25 | return 0; | |
26 | } | |
27 | switch (git_parse_maybe_bool(arg)) { | |
28 | case 1: | |
29 | *(int *)(opt->value) = SEND_PACK_PUSH_CERT_ALWAYS; | |
30 | return 0; | |
31 | case 0: | |
32 | *(int *)(opt->value) = SEND_PACK_PUSH_CERT_NEVER; | |
33 | return 0; | |
34 | } | |
35 | if (!strcasecmp("if-asked", arg)) { | |
36 | *(int *)(opt->value) = SEND_PACK_PUSH_CERT_IF_ASKED; | |
37 | return 0; | |
38 | } | |
39 | die("bad %s argument: %s", opt->long_name, arg); | |
40 | } | |
41 | ||
42 | static void feed_object(const struct object_id *oid, FILE *fh, int negative) | |
43 | { | |
44 | if (negative && | |
45 | !has_object_file_with_flags(oid, | |
46 | OBJECT_INFO_SKIP_FETCH_OBJECT | | |
47 | OBJECT_INFO_QUICK)) | |
48 | return; | |
49 | ||
50 | if (negative) | |
51 | putc('^', fh); | |
52 | fputs(oid_to_hex(oid), fh); | |
53 | putc('\n', fh); | |
54 | } | |
55 | ||
56 | /* | |
57 | * Make a pack stream and spit it out into file descriptor fd | |
58 | */ | |
59 | static int pack_objects(int fd, struct ref *refs, struct oid_array *advertised, | |
60 | struct oid_array *negotiated, | |
61 | struct send_pack_args *args) | |
62 | { | |
63 | /* | |
64 | * The child becomes pack-objects --revs; we feed | |
65 | * the revision parameters to it via its stdin and | |
66 | * let its stdout go back to the other end. | |
67 | */ | |
68 | struct child_process po = CHILD_PROCESS_INIT; | |
69 | FILE *po_in; | |
70 | int i; | |
71 | int rc; | |
72 | ||
73 | strvec_push(&po.args, "pack-objects"); | |
74 | strvec_push(&po.args, "--all-progress-implied"); | |
75 | strvec_push(&po.args, "--revs"); | |
76 | strvec_push(&po.args, "--stdout"); | |
77 | if (args->use_thin_pack) | |
78 | strvec_push(&po.args, "--thin"); | |
79 | if (args->use_ofs_delta) | |
80 | strvec_push(&po.args, "--delta-base-offset"); | |
81 | if (args->quiet || !args->progress) | |
82 | strvec_push(&po.args, "-q"); | |
83 | if (args->progress) | |
84 | strvec_push(&po.args, "--progress"); | |
85 | if (is_repository_shallow(the_repository)) | |
86 | strvec_push(&po.args, "--shallow"); | |
87 | po.in = -1; | |
88 | po.out = args->stateless_rpc ? -1 : fd; | |
89 | po.git_cmd = 1; | |
90 | po.clean_on_exit = 1; | |
91 | if (start_command(&po)) | |
92 | die_errno("git pack-objects failed"); | |
93 | ||
94 | /* | |
95 | * We feed the pack-objects we just spawned with revision | |
96 | * parameters by writing to the pipe. | |
97 | */ | |
98 | po_in = xfdopen(po.in, "w"); | |
99 | for (i = 0; i < advertised->nr; i++) | |
100 | feed_object(&advertised->oid[i], po_in, 1); | |
101 | for (i = 0; i < negotiated->nr; i++) | |
102 | feed_object(&negotiated->oid[i], po_in, 1); | |
103 | ||
104 | while (refs) { | |
105 | if (!is_null_oid(&refs->old_oid)) | |
106 | feed_object(&refs->old_oid, po_in, 1); | |
107 | if (!is_null_oid(&refs->new_oid)) | |
108 | feed_object(&refs->new_oid, po_in, 0); | |
109 | refs = refs->next; | |
110 | } | |
111 | ||
112 | fflush(po_in); | |
113 | if (ferror(po_in)) | |
114 | die_errno("error writing to pack-objects"); | |
115 | fclose(po_in); | |
116 | ||
117 | if (args->stateless_rpc) { | |
118 | char *buf = xmalloc(LARGE_PACKET_MAX); | |
119 | while (1) { | |
120 | ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX); | |
121 | if (n <= 0) | |
122 | break; | |
123 | send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX); | |
124 | } | |
125 | free(buf); | |
126 | close(po.out); | |
127 | po.out = -1; | |
128 | } | |
129 | ||
130 | rc = finish_command(&po); | |
131 | if (rc) { | |
132 | /* | |
133 | * For a normal non-zero exit, we assume pack-objects wrote | |
134 | * something useful to stderr. For death by signal, though, | |
135 | * we should mention it to the user. The exception is SIGPIPE | |
136 | * (141), because that's a normal occurrence if the remote end | |
137 | * hangs up (and we'll report that by trying to read the unpack | |
138 | * status). | |
139 | */ | |
140 | if (rc > 128 && rc != 141) | |
141 | error("pack-objects died of signal %d", rc - 128); | |
142 | return -1; | |
143 | } | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static int receive_unpack_status(struct packet_reader *reader) | |
148 | { | |
149 | if (packet_reader_read(reader) != PACKET_READ_NORMAL) | |
150 | return error(_("unexpected flush packet while reading remote unpack status")); | |
151 | if (!skip_prefix(reader->line, "unpack ", &reader->line)) | |
152 | return error(_("unable to parse remote unpack status: %s"), reader->line); | |
153 | if (strcmp(reader->line, "ok")) | |
154 | return error(_("remote unpack failed: %s"), reader->line); | |
155 | return 0; | |
156 | } | |
157 | ||
158 | static int receive_status(struct packet_reader *reader, struct ref *refs) | |
159 | { | |
160 | struct ref *hint; | |
161 | int ret; | |
162 | struct ref_push_report *report = NULL; | |
163 | int new_report = 0; | |
164 | int once = 0; | |
165 | ||
166 | hint = NULL; | |
167 | ret = receive_unpack_status(reader); | |
168 | while (1) { | |
169 | struct object_id old_oid, new_oid; | |
170 | const char *head; | |
171 | const char *refname; | |
172 | char *p; | |
173 | if (packet_reader_read(reader) != PACKET_READ_NORMAL) | |
174 | break; | |
175 | head = reader->line; | |
176 | p = strchr(head, ' '); | |
177 | if (!p) { | |
178 | error("invalid status line from remote: %s", reader->line); | |
179 | ret = -1; | |
180 | break; | |
181 | } | |
182 | *p++ = '\0'; | |
183 | ||
184 | if (!strcmp(head, "option")) { | |
185 | const char *key, *val; | |
186 | ||
187 | if (!hint || !(report || new_report)) { | |
188 | if (!once++) | |
189 | error("'option' without a matching 'ok/ng' directive"); | |
190 | ret = -1; | |
191 | continue; | |
192 | } | |
193 | if (new_report) { | |
194 | if (!hint->report) { | |
195 | CALLOC_ARRAY(hint->report, 1); | |
196 | report = hint->report; | |
197 | } else { | |
198 | report = hint->report; | |
199 | while (report->next) | |
200 | report = report->next; | |
201 | CALLOC_ARRAY(report->next, 1); | |
202 | report = report->next; | |
203 | } | |
204 | new_report = 0; | |
205 | } | |
206 | key = p; | |
207 | p = strchr(key, ' '); | |
208 | if (p) | |
209 | *p++ = '\0'; | |
210 | val = p; | |
211 | if (!strcmp(key, "refname")) | |
212 | report->ref_name = xstrdup_or_null(val); | |
213 | else if (!strcmp(key, "old-oid") && val && | |
214 | !parse_oid_hex(val, &old_oid, &val)) | |
215 | report->old_oid = oiddup(&old_oid); | |
216 | else if (!strcmp(key, "new-oid") && val && | |
217 | !parse_oid_hex(val, &new_oid, &val)) | |
218 | report->new_oid = oiddup(&new_oid); | |
219 | else if (!strcmp(key, "forced-update")) | |
220 | report->forced_update = 1; | |
221 | continue; | |
222 | } | |
223 | ||
224 | report = NULL; | |
225 | new_report = 0; | |
226 | if (strcmp(head, "ok") && strcmp(head, "ng")) { | |
227 | error("invalid ref status from remote: %s", head); | |
228 | ret = -1; | |
229 | break; | |
230 | } | |
231 | refname = p; | |
232 | p = strchr(refname, ' '); | |
233 | if (p) | |
234 | *p++ = '\0'; | |
235 | /* first try searching at our hint, falling back to all refs */ | |
236 | if (hint) | |
237 | hint = find_ref_by_name(hint, refname); | |
238 | if (!hint) | |
239 | hint = find_ref_by_name(refs, refname); | |
240 | if (!hint) { | |
241 | warning("remote reported status on unknown ref: %s", | |
242 | refname); | |
243 | continue; | |
244 | } | |
245 | if (hint->status != REF_STATUS_EXPECTING_REPORT && | |
246 | hint->status != REF_STATUS_OK && | |
247 | hint->status != REF_STATUS_REMOTE_REJECT) { | |
248 | warning("remote reported status on unexpected ref: %s", | |
249 | refname); | |
250 | continue; | |
251 | } | |
252 | if (!strcmp(head, "ng")) { | |
253 | hint->status = REF_STATUS_REMOTE_REJECT; | |
254 | if (p) | |
255 | hint->remote_status = xstrdup(p); | |
256 | else | |
257 | hint->remote_status = "failed"; | |
258 | } else { | |
259 | hint->status = REF_STATUS_OK; | |
260 | hint->remote_status = xstrdup_or_null(p); | |
261 | new_report = 1; | |
262 | } | |
263 | } | |
264 | return ret; | |
265 | } | |
266 | ||
267 | static int sideband_demux(int in, int out, void *data) | |
268 | { | |
269 | int *fd = data, ret; | |
270 | if (async_with_fork()) | |
271 | close(fd[1]); | |
272 | ret = recv_sideband("send-pack", fd[0], out); | |
273 | close(out); | |
274 | return ret; | |
275 | } | |
276 | ||
277 | static int advertise_shallow_grafts_cb(const struct commit_graft *graft, void *cb) | |
278 | { | |
279 | struct strbuf *sb = cb; | |
280 | if (graft->nr_parent == -1) | |
281 | packet_buf_write(sb, "shallow %s\n", oid_to_hex(&graft->oid)); | |
282 | return 0; | |
283 | } | |
284 | ||
285 | static void advertise_shallow_grafts_buf(struct strbuf *sb) | |
286 | { | |
287 | if (!is_repository_shallow(the_repository)) | |
288 | return; | |
289 | for_each_commit_graft(advertise_shallow_grafts_cb, sb); | |
290 | } | |
291 | ||
292 | #define CHECK_REF_NO_PUSH -1 | |
293 | #define CHECK_REF_STATUS_REJECTED -2 | |
294 | #define CHECK_REF_UPTODATE -3 | |
295 | static int check_to_send_update(const struct ref *ref, const struct send_pack_args *args) | |
296 | { | |
297 | if (!ref->peer_ref && !args->send_mirror) | |
298 | return CHECK_REF_NO_PUSH; | |
299 | ||
300 | /* Check for statuses set by set_ref_status_for_push() */ | |
301 | switch (ref->status) { | |
302 | case REF_STATUS_REJECT_NONFASTFORWARD: | |
303 | case REF_STATUS_REJECT_ALREADY_EXISTS: | |
304 | case REF_STATUS_REJECT_FETCH_FIRST: | |
305 | case REF_STATUS_REJECT_NEEDS_FORCE: | |
306 | case REF_STATUS_REJECT_STALE: | |
307 | case REF_STATUS_REJECT_REMOTE_UPDATED: | |
308 | case REF_STATUS_REJECT_NODELETE: | |
309 | return CHECK_REF_STATUS_REJECTED; | |
310 | case REF_STATUS_UPTODATE: | |
311 | return CHECK_REF_UPTODATE; | |
312 | ||
313 | default: | |
314 | case REF_STATUS_EXPECTING_REPORT: | |
315 | /* already passed checks on the local side */ | |
316 | case REF_STATUS_OK: | |
317 | /* of course this is OK */ | |
318 | return 0; | |
319 | } | |
320 | } | |
321 | ||
322 | /* | |
323 | * the beginning of the next line, or the end of buffer. | |
324 | * | |
325 | * NEEDSWORK: perhaps move this to git-compat-util.h or somewhere and | |
326 | * convert many similar uses found by "git grep -A4 memchr". | |
327 | */ | |
328 | static const char *next_line(const char *line, size_t len) | |
329 | { | |
330 | const char *nl = memchr(line, '\n', len); | |
331 | if (!nl) | |
332 | return line + len; /* incomplete line */ | |
333 | return nl + 1; | |
334 | } | |
335 | ||
336 | static int generate_push_cert(struct strbuf *req_buf, | |
337 | const struct ref *remote_refs, | |
338 | struct send_pack_args *args, | |
339 | const char *cap_string, | |
340 | const char *push_cert_nonce) | |
341 | { | |
342 | const struct ref *ref; | |
343 | struct string_list_item *item; | |
344 | char *signing_key = xstrdup(get_signing_key()); | |
345 | const char *cp, *np; | |
346 | struct strbuf cert = STRBUF_INIT; | |
347 | int update_seen = 0; | |
348 | ||
349 | strbuf_addstr(&cert, "certificate version 0.1\n"); | |
350 | strbuf_addf(&cert, "pusher %s ", signing_key); | |
351 | datestamp(&cert); | |
352 | strbuf_addch(&cert, '\n'); | |
353 | if (args->url && *args->url) { | |
354 | char *anon_url = transport_anonymize_url(args->url); | |
355 | strbuf_addf(&cert, "pushee %s\n", anon_url); | |
356 | free(anon_url); | |
357 | } | |
358 | if (push_cert_nonce[0]) | |
359 | strbuf_addf(&cert, "nonce %s\n", push_cert_nonce); | |
360 | if (args->push_options) | |
361 | for_each_string_list_item(item, args->push_options) | |
362 | strbuf_addf(&cert, "push-option %s\n", item->string); | |
363 | strbuf_addstr(&cert, "\n"); | |
364 | ||
365 | for (ref = remote_refs; ref; ref = ref->next) { | |
366 | if (check_to_send_update(ref, args) < 0) | |
367 | continue; | |
368 | update_seen = 1; | |
369 | strbuf_addf(&cert, "%s %s %s\n", | |
370 | oid_to_hex(&ref->old_oid), | |
371 | oid_to_hex(&ref->new_oid), | |
372 | ref->name); | |
373 | } | |
374 | if (!update_seen) | |
375 | goto free_return; | |
376 | ||
377 | if (sign_buffer(&cert, &cert, signing_key)) | |
378 | die(_("failed to sign the push certificate")); | |
379 | ||
380 | packet_buf_write(req_buf, "push-cert%c%s", 0, cap_string); | |
381 | for (cp = cert.buf; cp < cert.buf + cert.len; cp = np) { | |
382 | np = next_line(cp, cert.buf + cert.len - cp); | |
383 | packet_buf_write(req_buf, | |
384 | "%.*s", (int)(np - cp), cp); | |
385 | } | |
386 | packet_buf_write(req_buf, "push-cert-end\n"); | |
387 | ||
388 | free_return: | |
389 | free(signing_key); | |
390 | strbuf_release(&cert); | |
391 | return update_seen; | |
392 | } | |
393 | ||
394 | #define NONCE_LEN_LIMIT 256 | |
395 | ||
396 | static void reject_invalid_nonce(const char *nonce, int len) | |
397 | { | |
398 | int i = 0; | |
399 | ||
400 | if (NONCE_LEN_LIMIT <= len) | |
401 | die("the receiving end asked to sign an invalid nonce <%.*s>", | |
402 | len, nonce); | |
403 | ||
404 | for (i = 0; i < len; i++) { | |
405 | int ch = nonce[i] & 0xFF; | |
406 | if (isalnum(ch) || | |
407 | ch == '-' || ch == '.' || | |
408 | ch == '/' || ch == '+' || | |
409 | ch == '=' || ch == '_') | |
410 | continue; | |
411 | die("the receiving end asked to sign an invalid nonce <%.*s>", | |
412 | len, nonce); | |
413 | } | |
414 | } | |
415 | ||
416 | static void get_commons_through_negotiation(const char *url, | |
417 | const struct ref *remote_refs, | |
418 | struct oid_array *commons) | |
419 | { | |
420 | struct child_process child = CHILD_PROCESS_INIT; | |
421 | const struct ref *ref; | |
422 | int len = the_hash_algo->hexsz + 1; /* hash + NL */ | |
423 | ||
424 | child.git_cmd = 1; | |
425 | child.no_stdin = 1; | |
426 | child.out = -1; | |
427 | strvec_pushl(&child.args, "fetch", "--negotiate-only", NULL); | |
428 | for (ref = remote_refs; ref; ref = ref->next) | |
429 | strvec_pushf(&child.args, "--negotiation-tip=%s", oid_to_hex(&ref->new_oid)); | |
430 | strvec_push(&child.args, url); | |
431 | ||
432 | if (start_command(&child)) | |
433 | die(_("send-pack: unable to fork off fetch subprocess")); | |
434 | ||
435 | do { | |
436 | char hex_hash[GIT_MAX_HEXSZ + 1]; | |
437 | int read_len = read_in_full(child.out, hex_hash, len); | |
438 | struct object_id oid; | |
439 | const char *end; | |
440 | ||
441 | if (!read_len) | |
442 | break; | |
443 | if (read_len != len) | |
444 | die("invalid length read %d", read_len); | |
445 | if (parse_oid_hex(hex_hash, &oid, &end) || *end != '\n') | |
446 | die("invalid hash"); | |
447 | oid_array_append(commons, &oid); | |
448 | } while (1); | |
449 | ||
450 | if (finish_command(&child)) { | |
451 | /* | |
452 | * The information that push negotiation provides is useful but | |
453 | * not mandatory. | |
454 | */ | |
455 | warning(_("push negotiation failed; proceeding anyway with push")); | |
456 | } | |
457 | } | |
458 | ||
459 | int send_pack(struct send_pack_args *args, | |
460 | int fd[], struct child_process *conn, | |
461 | struct ref *remote_refs, | |
462 | struct oid_array *extra_have) | |
463 | { | |
464 | struct oid_array commons = OID_ARRAY_INIT; | |
465 | int in = fd[0]; | |
466 | int out = fd[1]; | |
467 | struct strbuf req_buf = STRBUF_INIT; | |
468 | struct strbuf cap_buf = STRBUF_INIT; | |
469 | struct ref *ref; | |
470 | int need_pack_data = 0; | |
471 | int allow_deleting_refs = 0; | |
472 | int status_report = 0; | |
473 | int use_sideband = 0; | |
474 | int quiet_supported = 0; | |
475 | int agent_supported = 0; | |
476 | int advertise_sid = 0; | |
477 | int push_negotiate = 0; | |
478 | int use_atomic = 0; | |
479 | int atomic_supported = 0; | |
480 | int use_push_options = 0; | |
481 | int push_options_supported = 0; | |
482 | int object_format_supported = 0; | |
483 | unsigned cmds_sent = 0; | |
484 | int ret; | |
485 | struct async demux; | |
486 | const char *push_cert_nonce = NULL; | |
487 | struct packet_reader reader; | |
488 | ||
489 | if (!remote_refs) { | |
490 | fprintf(stderr, "No refs in common and none specified; doing nothing.\n" | |
491 | "Perhaps you should specify a branch.\n"); | |
492 | return 0; | |
493 | } | |
494 | ||
495 | git_config_get_bool("push.negotiate", &push_negotiate); | |
496 | if (push_negotiate) | |
497 | get_commons_through_negotiation(args->url, remote_refs, &commons); | |
498 | ||
499 | git_config_get_bool("transfer.advertisesid", &advertise_sid); | |
500 | ||
501 | /* Does the other end support the reporting? */ | |
502 | if (server_supports("report-status-v2")) | |
503 | status_report = 2; | |
504 | else if (server_supports("report-status")) | |
505 | status_report = 1; | |
506 | if (server_supports("delete-refs")) | |
507 | allow_deleting_refs = 1; | |
508 | if (server_supports("ofs-delta")) | |
509 | args->use_ofs_delta = 1; | |
510 | if (server_supports("side-band-64k")) | |
511 | use_sideband = 1; | |
512 | if (server_supports("quiet")) | |
513 | quiet_supported = 1; | |
514 | if (server_supports("agent")) | |
515 | agent_supported = 1; | |
516 | if (!server_supports("session-id")) | |
517 | advertise_sid = 0; | |
518 | if (server_supports("no-thin")) | |
519 | args->use_thin_pack = 0; | |
520 | if (server_supports("atomic")) | |
521 | atomic_supported = 1; | |
522 | if (server_supports("push-options")) | |
523 | push_options_supported = 1; | |
524 | ||
525 | if (!server_supports_hash(the_hash_algo->name, &object_format_supported)) | |
526 | die(_("the receiving end does not support this repository's hash algorithm")); | |
527 | ||
528 | if (args->push_cert != SEND_PACK_PUSH_CERT_NEVER) { | |
529 | int len; | |
530 | push_cert_nonce = server_feature_value("push-cert", &len); | |
531 | if (push_cert_nonce) { | |
532 | reject_invalid_nonce(push_cert_nonce, len); | |
533 | push_cert_nonce = xmemdupz(push_cert_nonce, len); | |
534 | } else if (args->push_cert == SEND_PACK_PUSH_CERT_ALWAYS) { | |
535 | die(_("the receiving end does not support --signed push")); | |
536 | } else if (args->push_cert == SEND_PACK_PUSH_CERT_IF_ASKED) { | |
537 | warning(_("not sending a push certificate since the" | |
538 | " receiving end does not support --signed" | |
539 | " push")); | |
540 | } | |
541 | } | |
542 | ||
543 | if (args->atomic && !atomic_supported) | |
544 | die(_("the receiving end does not support --atomic push")); | |
545 | ||
546 | use_atomic = atomic_supported && args->atomic; | |
547 | ||
548 | if (args->push_options && !push_options_supported) | |
549 | die(_("the receiving end does not support push options")); | |
550 | ||
551 | use_push_options = push_options_supported && args->push_options; | |
552 | ||
553 | if (status_report == 1) | |
554 | strbuf_addstr(&cap_buf, " report-status"); | |
555 | else if (status_report == 2) | |
556 | strbuf_addstr(&cap_buf, " report-status-v2"); | |
557 | if (use_sideband) | |
558 | strbuf_addstr(&cap_buf, " side-band-64k"); | |
559 | if (quiet_supported && (args->quiet || !args->progress)) | |
560 | strbuf_addstr(&cap_buf, " quiet"); | |
561 | if (use_atomic) | |
562 | strbuf_addstr(&cap_buf, " atomic"); | |
563 | if (use_push_options) | |
564 | strbuf_addstr(&cap_buf, " push-options"); | |
565 | if (object_format_supported) | |
566 | strbuf_addf(&cap_buf, " object-format=%s", the_hash_algo->name); | |
567 | if (agent_supported) | |
568 | strbuf_addf(&cap_buf, " agent=%s", git_user_agent_sanitized()); | |
569 | if (advertise_sid) | |
570 | strbuf_addf(&cap_buf, " session-id=%s", trace2_session_id()); | |
571 | ||
572 | /* | |
573 | * NEEDSWORK: why does delete-refs have to be so specific to | |
574 | * send-pack machinery that set_ref_status_for_push() cannot | |
575 | * set this bit for us??? | |
576 | */ | |
577 | for (ref = remote_refs; ref; ref = ref->next) | |
578 | if (ref->deletion && !allow_deleting_refs) | |
579 | ref->status = REF_STATUS_REJECT_NODELETE; | |
580 | ||
581 | /* | |
582 | * Clear the status for each ref and see if we need to send | |
583 | * the pack data. | |
584 | */ | |
585 | for (ref = remote_refs; ref; ref = ref->next) { | |
586 | switch (check_to_send_update(ref, args)) { | |
587 | case 0: /* no error */ | |
588 | break; | |
589 | case CHECK_REF_STATUS_REJECTED: | |
590 | /* | |
591 | * When we know the server would reject a ref update if | |
592 | * we were to send it and we're trying to send the refs | |
593 | * atomically, abort the whole operation. | |
594 | */ | |
595 | if (use_atomic) { | |
596 | strbuf_release(&req_buf); | |
597 | strbuf_release(&cap_buf); | |
598 | reject_atomic_push(remote_refs, args->send_mirror); | |
599 | error("atomic push failed for ref %s. status: %d\n", | |
600 | ref->name, ref->status); | |
601 | return args->porcelain ? 0 : -1; | |
602 | } | |
603 | /* else fallthrough */ | |
604 | default: | |
605 | continue; | |
606 | } | |
607 | if (!ref->deletion) | |
608 | need_pack_data = 1; | |
609 | ||
610 | if (args->dry_run || !status_report) | |
611 | ref->status = REF_STATUS_OK; | |
612 | else | |
613 | ref->status = REF_STATUS_EXPECTING_REPORT; | |
614 | } | |
615 | ||
616 | if (!args->dry_run) | |
617 | advertise_shallow_grafts_buf(&req_buf); | |
618 | ||
619 | /* | |
620 | * Finally, tell the other end! | |
621 | */ | |
622 | if (!args->dry_run && push_cert_nonce) | |
623 | cmds_sent = generate_push_cert(&req_buf, remote_refs, args, | |
624 | cap_buf.buf, push_cert_nonce); | |
625 | else if (!args->dry_run) | |
626 | for (ref = remote_refs; ref; ref = ref->next) { | |
627 | char *old_hex, *new_hex; | |
628 | ||
629 | if (check_to_send_update(ref, args) < 0) | |
630 | continue; | |
631 | ||
632 | old_hex = oid_to_hex(&ref->old_oid); | |
633 | new_hex = oid_to_hex(&ref->new_oid); | |
634 | if (!cmds_sent) { | |
635 | packet_buf_write(&req_buf, | |
636 | "%s %s %s%c%s", | |
637 | old_hex, new_hex, ref->name, 0, | |
638 | cap_buf.buf); | |
639 | cmds_sent = 1; | |
640 | } else { | |
641 | packet_buf_write(&req_buf, "%s %s %s", | |
642 | old_hex, new_hex, ref->name); | |
643 | } | |
644 | } | |
645 | ||
646 | if (use_push_options) { | |
647 | struct string_list_item *item; | |
648 | ||
649 | packet_buf_flush(&req_buf); | |
650 | for_each_string_list_item(item, args->push_options) | |
651 | packet_buf_write(&req_buf, "%s", item->string); | |
652 | } | |
653 | ||
654 | if (args->stateless_rpc) { | |
655 | if (!args->dry_run && (cmds_sent || is_repository_shallow(the_repository))) { | |
656 | packet_buf_flush(&req_buf); | |
657 | send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX); | |
658 | } | |
659 | } else { | |
660 | write_or_die(out, req_buf.buf, req_buf.len); | |
661 | packet_flush(out); | |
662 | } | |
663 | strbuf_release(&req_buf); | |
664 | strbuf_release(&cap_buf); | |
665 | ||
666 | if (use_sideband && cmds_sent) { | |
667 | memset(&demux, 0, sizeof(demux)); | |
668 | demux.proc = sideband_demux; | |
669 | demux.data = fd; | |
670 | demux.out = -1; | |
671 | demux.isolate_sigpipe = 1; | |
672 | if (start_async(&demux)) | |
673 | die("send-pack: unable to fork off sideband demultiplexer"); | |
674 | in = demux.out; | |
675 | } | |
676 | ||
677 | packet_reader_init(&reader, in, NULL, 0, | |
678 | PACKET_READ_CHOMP_NEWLINE | | |
679 | PACKET_READ_DIE_ON_ERR_PACKET); | |
680 | ||
681 | if (need_pack_data && cmds_sent) { | |
682 | if (pack_objects(out, remote_refs, extra_have, &commons, args) < 0) { | |
683 | if (args->stateless_rpc) | |
684 | close(out); | |
685 | if (git_connection_is_socket(conn)) | |
686 | shutdown(fd[0], SHUT_WR); | |
687 | ||
688 | /* | |
689 | * Do not even bother with the return value; we know we | |
690 | * are failing, and just want the error() side effects, | |
691 | * as well as marking refs with their remote status (if | |
692 | * we get one). | |
693 | */ | |
694 | if (status_report) | |
695 | receive_status(&reader, remote_refs); | |
696 | ||
697 | if (use_sideband) { | |
698 | close(demux.out); | |
699 | finish_async(&demux); | |
700 | } | |
701 | fd[1] = -1; | |
702 | return -1; | |
703 | } | |
704 | if (!args->stateless_rpc) | |
705 | /* Closed by pack_objects() via start_command() */ | |
706 | fd[1] = -1; | |
707 | } | |
708 | if (args->stateless_rpc && cmds_sent) | |
709 | packet_flush(out); | |
710 | ||
711 | if (status_report && cmds_sent) | |
712 | ret = receive_status(&reader, remote_refs); | |
713 | else | |
714 | ret = 0; | |
715 | if (args->stateless_rpc) | |
716 | packet_flush(out); | |
717 | ||
718 | if (use_sideband && cmds_sent) { | |
719 | close(demux.out); | |
720 | if (finish_async(&demux)) { | |
721 | error("error in sideband demultiplexer"); | |
722 | ret = -1; | |
723 | } | |
724 | } | |
725 | ||
726 | if (ret < 0) | |
727 | return ret; | |
728 | ||
729 | if (args->porcelain) | |
730 | return 0; | |
731 | ||
732 | for (ref = remote_refs; ref; ref = ref->next) { | |
733 | switch (ref->status) { | |
734 | case REF_STATUS_NONE: | |
735 | case REF_STATUS_UPTODATE: | |
736 | case REF_STATUS_OK: | |
737 | break; | |
738 | default: | |
739 | return -1; | |
740 | } | |
741 | } | |
742 | return 0; | |
743 | } |